Planetary gearing



S. V. DICKMAN. PLANETARY GEARING. APPLICATION FILED Aus.25, 19.19.

7 5 24 3 Vum MW 9 m 2 A m m 1 S. V. DICKMAN.

PLANETARY GEARING. APPLICATION FILED AU G.25. 1919.

Patented July 27, 1920.

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Specification of Letters Patent.

Application filed August 25, 1919. Serial No. 319,539;

To all whom it may'conce'rn: V Be it lmown that I,'SM1THV. DIGKMA-N,

a citizen of the United States, and a-resi-' dent of' Shavertown, in the county of Dela? ware and State of New York,'have invented a new and Improved Planetary Gearing, of

which the following is a full, clear, and

the driven shaft by the selective operation of brake bands controlling drums.

A'further object is to'provide improvements of the. character stated which are" compact in assemblage," "comparatively sun;

ple in construction and strong andjdurable inuse. I With these and other objects in view the invention consists in certain novel features of construction, andcombinations and arrangements of parts, as-will be more fully hereinafter described and pointed out in' the claims. ,7 i

In the accompanying drawings Figure 1 is a view partly in elevation and partly in section illustrating my improvements; I Fig. 2 is a viewfiintransver'se section on the line 2-'2 of Fig. 1;

Fig.3 is a view in: transverse section on the line 33 ofFig.f1; a f j I Fig. 4 is a view in transverse section on Fig.1; v Fig. 5 is a view in transverse section on theline 5 5'of Fig.1;y' Fig. 6 is a view in transverse section on the line 6-6 of Fig. 1; and- I Fig. '7 is a view on 'a'reduced scale inside elevation illustrating the operating levers for theseveral gear shifts.

1-'represents a suitable casing inclosing my improved gearing "and 2 is a-drive shaft having a' gear supporting journal 3 in alinement therewith and also in alin'ementwith a driven-shaft 4. "The journal 3 anddrive shaft 2 are secured together and to a flywheel 5 by means of cap screws 6. A sleeve 7 is fixed to the driven shaft 4 and turns freely on a bushing 8 located around the end ofjournal 3. A disk 9'isse cured to the journal 3 by means of screws 10 or other suitable conne'cting devices.

A sleeve 11 is mounted to turn on the journal 3 around a bushing 12 and has a drum 13 fixed thereto. The drum- 13 and the d1sk 9 are provided with friction disks 14 whichare pressed together by a ring 15' resented July '27, 19 20.

operated by plungers 16 to frictiona'lly con-1 met the drum 13 and disk 9.

- The plungers 16-are movable through a ring 17 fixedto sleeve 7 and are operated by arms 18 plvotally connected to the ring 17 as shown at 19, and at their inner free ends are engaged by a. sliding collar 20 keyed to the sleeve 7; 1 3' A sleeve 21 turns 'on the sleeve 11 and has an interposed bushing 22 between the same and the sleeve 11. This sleeve 21 carries a drum 23. Another sleeve 24 is mountedto turn on thesleeve 21 'and hasa bushing 25 between the same and the sleeve 21. This sleeve 24 has a drum 26 secured thereto; 1

A sleeve 27 is mounted to turn around the sleeve24 and has a bushing 28. The.

sleeve 2Tcarries a drum 29 and-all of the drums 26, 29, 23 and 13 are of substantially thesame diameter and have brake bands 30 to engage the same, as will more fully hereinafter appear. j c v Three sets of drivingpinions 31, 32' and 33v are secured together by rivets34 and mount ed to turn on journal pinsx35 secured to the flywheel 5. 1 These pinions 31, 32 and 33 are of different diameters." The pinions 31 mesh with a gear carried by sleeve 11. "The pinions 32 mesh with a gear 37 carried by sleeve 21. The pinions 33me sh with a gear 38 carried by-sleeve 24. The sleeve 24 also has a gear 39 which meshes with a series of pinions 40 having rotary mounting on journalpins 41 carried by the drum 23i These pinions 40 also meshwith an internal rack 42in drum 29. s f

.qThe friction bands 30for all of the drums and the ioperating -mechanisn1- therefor being precisely alike, the description hereinafter of one will'apply alike to all; l

\ The bands 30 have perforatedflu gs 43 .at' their ends which receive a rod 44 havinga nut 45 on one end and a sleeve 46 011 their other ends. A. coiled spring 47 is located around the rod 44, and bears against the lugs 43 tending to releasethe'brake band.

The operating levers- 48, 49, 50.: and 51 respectively of the brake drums 26, 29,23 and 13 respectively "have cam collars '52 :which engage the ends of the sleeve 46 which are also shaped to be engaged by the camcollars so that the turning movement of the ilevers 38 'ha-vinga larger diameter-thanpart' 33,

T erated by a hand'lever (not-shown in Fig.

manner to move the sleeve, 21

operates to move the rod 44 longitudinally causing the lugs 13 to be moved toward each other and the brake band contracted around" the drum.

The sliding bovereferred' td,

which operates, the arms 18, is provided the collar in one direction. A forked member 51 has pin and groove engagement-55 withcol-lar 20; and isjsecured on a shaft 56 and has an operating lever 57 thereon which may be manually operated .in'any approved v against th'e action ofthelspring 53.

By reference to Fig. 7', it will be iioted,

that thelevers LQand 50 have crank arms 58 secured v thereto and connected by links 59 with the lever 57-. -The links 59 have slots 60 therein receiving a, pinufil on lever 57 to permitof'afcertaimindependent move-1 ment of the levers 49 and '50, ,yet during a,

portion ofl'the-fmove'ment cause the lever 57 to'operate as'wi'll bereadily understood.

.;For all practical purposes the sleeve 11, drum13, ring 17 andi'sleeve 7 constitute a single unitas motion is transmitted "through these parts from the pinion31and gear 36, e the speed-of .such turning movement: being Varied by the braking action on the several drums, as will-now be pointed out.

When the gear isiin high, the collar 20:is moved to the left of Fig. 1 causingthe arms 18 to movefthe plungerslG inwardly com pelling the disks 141 to frictionally engage and bind the drum 13 with the disk9: so that: the'speed of the journal 3 is directly communicated to the driven shaft 4. Tore verse, the drum 26 is held by means of its f '40 :brake bandl This'causes the: triple pinion'si 31', 32 and 33 tobe turned on' pin 35, gear- 38-being held by means of drum 26 and, band 30, will causepinions 33: to ride around38,

part 33 will makernore than one revfolution on pin 35 while theflywheel "makes one around its axis thus causing partf'31 to drive part 36 inadireCtion opposite to that of the 7) lifts under set screw and end of arm 57 thusireleasin'g the disks 14 and holding them 7 released so thatlow, intermediate or'reverse can'be operated as selective transmission regardless of high. I i 1 v When. the gears'are movedeither to low or intermediate speeds, the'disks 14;. arere leased and this action provided for by means ofthe connecting links 59, as shown in Fig. so't-ha't when the clutch bands around, thedrums 29 or 23 are operated to V hol'd'the drums, the collar'QO will move far enough to release'the binding action of the with a coiled spring 53 normally pressing sleeveQ-l is larger than the gear 31 and motion is transmitted from the gear tothe gear 36, the speed istherebyreduced and the engine.willbeoperating; in low, lVhenrunn-mg n. IOW lJI IILOII 33 turns p1n1on-381n the same manner as pinion turns pinion 36 but, o f course, ata slightly different speed. To. obtain an intermediate speed instead-of holding drum 23, sleeve-21 9 and gear 37 stationary, Said drum -231nust bedriven nthfisame d rect on as-th t ofthe.

flywheelbutj at aslowerratefof speed.- T his is-donethrough gears 33 in-meshwith pinion 38, sleeve 2%l andgear'39. 'Gear39 is inenesh 1 r with pinions 40. pinions 40 inimesh with interior gear 4 2, pinions 10 mounted on ournals 11 andcarried by drum" 23.- The ameter o p n 0 139 bei g l sst an t a f. the interior gear 42, will drive drum23 in the same directionasthat of the flywheel, but at'a slower rate; of.speed, thus obtaining h nt me ia speed 1 --It will be seen that the intermediatespeeds make. se f l the gea s' nd he hig speed? 3;

employs the disksll.

The band. arounddrum' l3iserves as a br keon yai. i .t Various slightcjhanges may bemade in the general formand arrangement of parts de; scribed without departing from "the invention, and hence I do notl-i'mit myself to the precise details-set forthgbut consider myself at liberty to make suclrcliaiiges and altera V tions as fairly fall within-the spiritand scope of the appendedclai'ms- I l. The combination with a drive shaft and a driven shait,;of a. sleeve on the drive shaft,

a drum on the sleeve, a---ring; secured to the drum, a; disk secured to thedrfive shaft,- friction disks between the disk and; drum, plungers carried by the-ring, pivotal-lysupported arms-engaging thekplungersto forcethe fricsecured to the ring whereby motion may be tion disks. together, a sliding collar for: oper ating said arms, a sleeve on the driven shaft the ,first-1nentioned sleeve, drums-on all of Vi r1 "d by oneiof'said drums and meshing with i30 internal gear of drum and gear on sleeve, and means for holding any of said drums against movement.

2. The combination with a drive shaft, and a driven shaft, of a flywheel on the drive shaft, journal pins on the flywheel, three pinions secured together and of different diameters on each journal pin, sleeves having gears thereon meshing with the pinions, drums on the sleeves, means for transmitting motion directly from the drive shaft to the driven shaft, means for transmitting motion from any of said sleeves to the driven shaft, and means for holding any of said drums whereby the said sleeves are selected as driving elements.

3. The combination ith a drive shaft,'and a driven shaft, of a ywheel on the drive shaft, journal pins on the flywheel, three pinions secured together and of diflferent diameters on each journal pin, sleeves having gears thereon meshing with the pinions, drums on the sleeves, means for transmitting motion directly from the drive shaft to the driven shaft,'means for transmitting motion from any of said sleeves to the driven shaft, means for holding any of said drums wherebythe said sleeves are selected as driving 7 elements, and means compelling the release of said direct dr1v1ng means when said drums are held.

4. The combination with a drive shaft, and

a driven shaft, of a flywheel on the drive shaft, journal pins on the flywheel, three pinions secured together and of different diameters on each journal pin, sleeves having gears thereon meshing with the pinions, drums on the sleeves, means for transmltting motion directly from the drive shaft to the a SMITH v. DICKMANL 

